Answer: (a) maximum in position A Position A will have the highest pressure since the area of contact is the smallest, and the area is inversely... View Article
Answer: (iv) tropical rainforests The animal described in the question, a carnivore with stripes on its body that moves very quickly while... View Article
Answer: The force on the unit area is called pressure, which works on the chapati. This is the pressure that the machine applies to the dough... View Article
Answer: The concentration of dissolved salts in seawater is higher than in drinking water. As a result, seawater will be a greater conductor... View Article
Answer: Frictional force refers to the force generated by two surfaces that contact and slide against each other. Friction is caused due to the... View Article
Answer: A forest is a purifier of air and water. By absorbing carbon dioxide and releasing oxygen, forests assist to cleanse and enhance the... View Article
Answer: The upward force is larger than the force of gravity. Each body in this universe attracts other bodies towards itself with a force... View Article
Answer: Her friend should push the box in the direction of East, where it will begin to move faster as the magnitude of force increases. Force... View Article
Answer: (b) i, ii & iii only To travel, sound required a medium. Sound cannot travel in a vacuum because there is no medium to transmit sound... View Article
Answer: Man can accomplish the following He can start dragging the cart instead of pushing it to resist gravity's downward force. He can travel... View Article
Answer: Because it will exert a greater amount of friction on the marble, it will move the shortest distance on the layer of sand, while the... View Article
Answer: A place receives very little rainfall, and the temperature is high throughout the year, the climate of that place will be hot and dry.... View Article
Answer: Given parameters Time period (t) - 2s frequency (f) - 0.5 oscillations/sec A pendulum makes 10 oscillations in 20 seconds Frequency (f)... View Article
Answer: (a) A The eye should be placed at position A because the hole can be seen only when the angle of incidence is equal to the angle of... View Article
Answer: 1 light-year= distance covered by light in one year. 10 light-years away from the earth glow today, then it will be seen after 10 years.... View Article
Answer: (i) liquid A is a better conductor than liquid B The amount of current flowing through a solution is determined by its conductivity. The... View Article
Answer: (a) A When a ray of light from the bulb strikes the mirror M, according to the laws of reflection of light, it will be reflected back... View Article
Answer: (b) polished marble surface Because a polished marble floor has the least frictional force and inertia, a car will move farthest on it.... View Article
Answer: (a) B and C B and C are at the same level, hence pressure will be the same at B and C. Fluid pressure is the pressure at a point within... View Article